Malicious PDF — malware analysis report

Static analysis result for SHA-256 57528df4f9e53bd6…

MALICIOUS

PDF

53.4 KB Created: 2020-08-18 14:20:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ce400d3e62753730831abe0a1b1fca5 SHA-1: cc60fd2d0d763176c3082ea584710565c3de1c7c SHA-256: 57528df4f9e53bd62bb8d5098d07ae06a8afcc794041b888b7811d78f6024409
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF SEO Link Farm'. The primary malicious URL, 'https://ttraff.ru/pify?keyword=azar+hack+apk+gems', is flagged as a known malicious redirector. This suggests the document's purpose is to lure users into clicking these links, which then redirect to malicious infrastructure. No scripts were extracted from this sample.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=azar+hack+apk+gems
    • http://files.citrix.mmac.org/uploads/1/3/1/8/131857479/wevukefipaxige_ginamupefinu_jedon_tavaji.pdf
    • http://batasog.healmylifemobile.com/uploads/1/3/0/8/130874493/c90a61dac9e6c7a.pdf
    • http://vumapewo.daphnemeesters.com/uploads/1/3/0/9/130969502/9d4d891892c5.pdf
    • https://cdn.shopify.com/s/files/1/0427/9340/2524/files/jesamadam.pdf
    • https://cdn.shopify.com/s/files/1/0432/3108/4708/files/36294182858.pdf
    • https://cdn.shopify.com/s/files/1/0435/5103/1447/files/90616009106.pdf
    • https://cdn.shopify.com/s/files/1/0438/0921/0529/files/digital_principles_and_design_givone.pdf
    • https://cdn.shopify.com/s/files/1/0430/4188/2265/files/gotarisavolanevivuxonaji.pdf
    • https://cdn.shopify.com/s/files/1/0433/6638/3768/files/cetoconazol_shampoo_medley_bula.pdf
    • https://cdn.shopify.com/s/files/1/0436/1139/0115/files/21391586991.pdf
    • https://cdn.shopify.com/s/files/1/0431/6597/4690/files/academic_english_skills_for_success.pdf
    • https://cdn.shopify.com/s/files/1/0430/8379/2545/files/what_is_the_plural_of_crisis.pdf
    • https://cdn.shopify.com/s/files/1/0435/8062/0963/files/61617235755.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000a0fb.bin
1f568480ff2f16072b63b803bcafcd6cb57bf251973ab04adc00d0a1b1e7322c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xA0FB 22780 bytes
font_00_sfnt_off00006be5.bin
000f467bc54b78dfc18d358ad708b69e2842741d3818027e5796a0dc87c8e6f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE5 5420 bytes
font_01_sfnt_off00007e3b.bin
1407e452ac724fc0d72ba0242810c2ee0294d6f4c724d426990283623b330c35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E3B 10060 bytes

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